Lobo SuperTraq Operator Instruction Manual
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21/06/2007 14:36
THRESHOLD
On/Off Threshold Level Control
This rotary knob control has three functions:
Turns the detector ON and OFF
Activates the automatic Audio Battery Test
Adjusts the Threshold Level
Turning the THRESHOLD knob counterclockwise completely until it “clicks” into the OFF position
turns the detector off by disconnecting the batteries from the circuit. NOTE: The detector should always
be turned off when not in use.
Turning the THRESHOLD knob clockwise past the initial “click” turns the detector on and activates the
automatic Audio Battery Test circuit. This test will give a sound, usually lasting several seconds, that
indicates the battery condition. When the test is over, the detector’s Threshold Level can be adjusted.
The threshold is the loudness of the background hum. Most users prefer this background hum to be just
barely audible in lightly mineralized ground, or a little louder in moderate to heavy mineralization. A few
users like to silence ground noise by setting the THRESHOLD knob slightly below the threshold of
audibility, but this will cause loss of some nuggets that would otherwise have been heard.
NOTE: It is best to turn the detector on in Discriminate Mode. Since the Discriminate Mode is a silent
mode with no continuous threshold sound, it will be obvious when the Audio Battery Test is complete. If
you turn the detector on in All Metal Mode, the Audio Battery Test sound will be immediately followed by
the threshold sound. This may make it difficult to hear the Audio Battery Test end and discern the battery
condition.
IMPORTANT
: The battery test tone can be VERY LOUD. So, it is best to turn the detector on
BEFORE putting headphones on to avoid the loud tone.
ALKALI NORMAL SOIL BLK SAND
Ground Selection Switch
NORMAL SOIL
— This is the mode you’ll probably operate in over 95% of the time. In this mode,
detector response is limited to a smaller range. This helps keep the unit from tuning out small metal
targets and smoothes the sound caused by mineralization.
BLK SAND
—This mode is similar to the NORMAL SOIL mode, but the sensitivity is reduced in order
to accommodate extremely high concentrations of iron minerals such as magnetite black sand. The
NORMAL SOIL mode will handle all but the most extreme conditions, and most users will never need to
switch to the BLACK SAND mode. But it’s there if you need it, and it will handle the extreme soil that
other machines can’t.
ALKALI
—This mode is similar to the NORMAL SOIL mode except that the SuperTRAQ circuitry is
allowed to operate over a much wider range of mineral signals. The ALKALI mode may allow the
